Below is an invitation to UK artists, don't forget the organisers will supply the small canvas on which you work on.
CALLING ALL ARTISTS.
Help raise funds for the Heath Robinson Museum opening in Pinner North West London this year. We invite you to take part in a Secret Art Sale at The Upstairs Gallery West House Pinner Memorial Park, 4-6 November 2016. To register email firstname.lastname@example.org. Deadline 31 August. We would love you to be part of it.